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A031947 Numbers in which 0,1,2,3,4,5 all occur in base 6. 2

%I #17 Aug 24 2023 12:10:50

%S 8345,8350,8375,8385,8410,8415,8525,8530,8585,8600,8620,8630,8735,

%T 8745,8765,8780,8835,8840,8950,8955,8980,8990,9015,9020,10505,10510,

%U 10535,10545,10570,10575,11045,11050,11165,11190,11200,11220,11255,11265,11345,11370,11415

%N Numbers in which 0,1,2,3,4,5 all occur in base 6.

%C Contains numbers like 47265, 47290, 47295, 47405 which are absent in A049357. - _R. J. Mathar_, Aug 24 2023

%p isA031947 := proc(n)

%p convert(convert(n,base,6),set) ;

%p if nops(%) = 6 then

%p true;

%p else

%p false;

%p end if;

%p end proc:

%p for n from 1 to 12000 do

%p if isA031947(n) then

%p print(n);

%p end if;

%p end do: # _R. J. Mathar_, Aug 24 2023

%Y Cf. A007092 (base 6), A023744 (each base 6 digit once).

%K nonn,base

%O 1,1

%A _Clark Kimberling_

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Last modified May 24 06:28 EDT 2024. Contains 372772 sequences. (Running on oeis4.)